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The tutorials combine the Galera and MariaDB monitor configuration as well as the server configuration sections that were duplicated for all tutorials. This should make the documentation easier to maintain.
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1.4 KiB
Configuring the MariaDB Monitor
This document describes how to configure a MariaDB master-slave cluster monitor to be used with MaxScale.
Configuring the Servers
The first step is to define the servers that make up the cluster. These servers will be used by the services and are monitored by the monitor.
[dbserv1]
type=server
address=192.168.2.1
port=3306
protocol=MariaDBBackend
[dbserv2]
type=server
address=192.168.2.2
port=3306
protocol=MariaDBBackend
[dbserv3]
type=server
address=192.168.2.3
port=3306
protocol=MariaDBBackend
Configuring the Monitor
The next step is to define the monitor that monitors the servers.
[Replication-Monitor]
type=monitor
module=mariadbmon
servers=dbserv1, dbserv2, dbserv3
user=monitor_user
password=my_password
monitor_interval=2000
The mandatory parameters are the object type, the monitor module to use, the
list of servers to monitor and the username and password to use when connecting
to the servers. The monitor_interval parameter controls how many milliseconds
the monitor waits between each monitoring loop.
Monitor User
The monitor user requires the REPLICATION CLIENT privileges to do basic monitoring. To create a user with the proper grants, execute the following SQL.
CREATE USER 'monitor_user'@'%' IDENTIFIED BY 'my_password';
GRANT REPLICATION CLIENT on *.* to 'monitor_user'@'%';